Swimming fin



FIG. 1 is a front perspective view of a swimming fin showing my newdesign;

FIG. 2 is a front perspective view thereof, on a reduced scale inexpanded condition;

FIG. 3 is a rear elevational view thereof on a reduced scale;

FIG. 4 is a front elevational view thereof, on a reduced scale inexpanded condition.

The ornamental design for a swimming fin, as shown and described.